Question

If(2x^2 - 2y^2) =125 and x-y =2.5 find (x + y)

Answer 1

Answer:

(x+y)= 25

Step-by-step explanation:

( 2x²-2y²)= 125

=> 2(x²-y²)=125

=> 2(x+y) ( x-y) = 125

=> 2(x+y) ( 2.5)= 125. since x-y= 2.5

=> (x+y)= 125/ 5= 25